Strip advancing device for autographic registers



06t- 29. 1940. w GOCHNAUER 2,219,956

STRIP ADVANCING DEVICE FOR AUTOGRAPHIC REGISTERS Filed May 26, 1939 2sheeis-sneex 1 g; y-W

Oct. 29. 1940. w. E. GOCHNAUER STRIP ADVANCING DEVICE FOR AUTOGRAPHICREGISTERS Filed May 26, 1939 2 Sheets-Sheet 2 h l ulullllllllllInvenior;

Wa/ier Goc/mauer Patented Oct.l29, 1940 STRIP ADVANCING DEVICE FOR AUTOGRAPHIC REGISTERS Walter E. Gochnauer, Dover, N. H., assignor toAmerican Sales Book Company, Inc., Niagara Falls, N. Y., a corporationof Delaware Application May 26, 1939, S erial No. 275,933

15 Claims.

This invention relates to improvements in'strlp feeding mechanism forfeeding record strips and the like in writing machines such as billingmachines, typewriters, autographc registers and the like. Moreparticularly the invention relates to an improved strip advancingmechanism operating to advance the record strips in machines of theclass mentioned to an extent less than a complete form length of therecord strips so that the forward ends of said strips can be grasped andpulled forwardly to bring the next succeeding form length into writingposition.

It is a general object of the invention to provide an improved stripadvancing mechanism for ma- 5 chines of the class mentioned whichwilllfunction with certainty to advance or jog the strips forwardly andto keep the strips in correct alignment, at the same time being of acomparatively simple structure and capable of economical man'- ufacture.

A further object of the invention is to provide a strip advancingmechanism for machines of the class mentioned provided with an improvedarrangement for retracting the strip advancing pins at the end of stripadvancing movement thereof, and to set the pinsagain into position forengagement with successive strip apertures.

Still another object of the invention is to provide a strip advancingmechanism for machines of the class mentioned embodied in an improvedmanner in a unitary assemblage that can be quickly and. easily installedin an autographic register or similar machine, and similarly quickly andeasily removed therefrom.

Other objects of the invention will be in part pointed out in thefollowing detailed disclosure of an illustrative but preferredembodiment of the invention, and will be in part obvious as thedisclosure proceeds.

The invention accordingly comprises thefeatures of construction,combination of elements,

and arrangement of parts, which will be exemplified in the constructionhereinafter set forth and the scope of the application of which will beindicated in the claims.

For a more complete understanding of the nature and objects of theinvention reference is had to the following detailed description and totheaccompanying drawings in which:

Fig. l is a perspective view of a portable autographic register havingthe improved strip advancing mechanism installed therein;

Fig. 2 is a substantially central, longitudinal, vertical section of theregister of Fig. 1, the section through the feeding mechanism beingtaken substantially along the broken line 2-2 of Fig. 4 and viewed inthe direction of the arrows;

Fig. 3 is a horizontal section through the register casing showing partsof the assemblage in plan;

Fig. 4 is'a fragmentary plan view of the strip i feeding or advancingmechanism;

Fig. 5 is a bottom plan of the strip advancing mechanism, parts being inhorizontal section; and

Fig. 6 is a fragmentary enlarged sectional view M taken substantially onthe line 6-45 of Fig. 4 looking in the direction of the arrows.

Referring to the illustrative embodiment of the invention shown in thedrawings for a detailed description thereof, the improved stripadvancing A mechanism is there disclosed as being installed in anautographic register of the portable type having a casing I0 providedwith a cover I I hinged as at I! to one end of the casing so it can beraised, and provided with a spring latch l3 for holding it 2 in closedposition. The cover II is formed with an opening l4 through which therecord strips are exposed for receiving inscriptions thereon, and awriting palten or plate I5 is positioned directly beneath the writingopening for supporting the record strips in writing position. The platenl5 may be attached. in the register in any desired manner. As shown, itmay be supported upon longitudinal upright plates one of which is shownat It, these plates rising above the bottom I! of 80 the compartmentwhich receives the record supply.

A compartment is provided beneath the horizontal partition I! and abovethe bottom of the v casing in which drawer l8 for receiving loose rec-85 0rd sheets is slidably mounted. The drawer I8 is slidably mounted foropening and closing movements within the lower casing compartment andmay be provided with a spring motor l9 operatively connected thereto foreffecting automatic 40 projection into open position upon release of thedrawer latch l8. Since the drawer and its operative mechanism do notparticularly form a part of the present invention, a detaileddescription thereof is unnecessary.

Record strips S of the long continuous traveler type are led from thesupply compartment above the horizontal partition I'I over the rear endof the platen into Writing position beneath the writ-q ing opening l4.There may be a single long con tinuous record strip, or two or moremaybe interleaved in transfer relation with each other. The supply ofstrips is preferably folded along transverse lines at longitudinallyspaced intervals in zigzag fashion into a zigzag folded supply pack Shoused within the supply compartment. Blank forms S for receiving theinscriptions are arranged at longitudinally spaced intervals along therecord strips S while transverse weakened severance lines S are arrangedbetween adjacent blank forms thus dividing each record strip into alongitudinal series of form sheets. Feed controlling apertures S arealso provided in each form sheet of the. strips, being arranged inlongitudinal series. One or more of these series of apertures may beprovided in a record strip, two such series being shown for cooperationwith the two pins of the strip advancing mechanism described below.

In cases where more than one record strip is used a carbon sheet orstrip C is preferably provided for each additional record strip so as totransfer the inscriptions thereto. The carbon strip or strips may beassembled into a supply roll C housed in an appropriate space in thecasing and controlled by a spring pressed plate 20. The carbon strips Cextend from the supply roll C across the platen and may be clamped intheir operative positions at their free end portions at the oppositeedge of the platen by means of a swinging clamping bar 2|.

As particularly shown in Figures 2, 4 and 5 the advancing mechanism forthe strips S is mounted in' a frame 22 attached in position within theregister casing. This frame embodies upright metallic channel members 23the forward flanges of which lie adjacent to the forward casing wall andmay be attached thereto in any convenient manner by screws, rivets,bolts, and the like. The supporting frame also embodies an uppersubstantially horizontal supporting plate 24 extending continuouslysubstantially between the channel members 23. The supporting frame plate24 is preferably integral with the webs of the channel members 23, theseframe elements being preferably fabricated from a single metallic platebent or pressed into shape. The supporting plate 24 as shown liesimmediately beneath the platen l5.

Attached to the underside of the frame plate 24 are two longitudinallyextending guide plates 25 laterally spaced apart and formed at theirinner longitudinal edges with grooves in which a slide plate 26 isconfined and mounted for longitudinal sliding movement. This slide plateforms a part of the sliding carriage for supporting the strip advancingpins later described.

At its rear portion the slide plate 26 is provided with supporting lugs21 to which the pin carrier plate or element 28 is pivotally attached.The carrier plate 28 at its forward part has two oppositely disposedcarrier arms 29 on each of which is mounted one of the strip advancingpins 30. Each of these pins is adapted to enter strip apertures S andhas rounded surfaces for engaging in the circular apertures.

Detents or detent plates 3| are pivotally mounted at 32 for horizontalswinging movement on the underside of the carrier plate 28. A guide or.keeper plate 33 is attached to the underside of the carrier plate 28 asby welding or riveting, extending transversely over the detents 3| so asto provide a support for said detents. The keeper plate is spacedslightly below the carrier plate 28 providing a space in which thedetents 3| move. Operating springs 34 are attached as at 33 to the underside of the carrier plate 28 having their forward upturned end portionsin engagement with the outer sides or edges of the detents 3|. Thesesprings 34 are tensioned to urge the detents toward each other intotheir normal operative positions.

A plate spring 36 is attached near its rearward extremity as at 31 tothe slide plate 26 extending through an opening 38 near the rearward endof the carrier plate 28 and engaging near its forward extremity with thelower surface of the keeper plate 33. The plate spring 36 is tensionedso as to tend to swing the carrier plate 28 upwardly on its pivotalmounting 21 and to carry the feed pins upwardly into their normaloperative positions.

Attached to the frame plate 24 or integrally formed therewith is a camplate 39 located in a position to engage at its rearward downwardlyinclined cam surface 39' with the forward edge 48 of the carrier plate28. This cam plate 39, as shown in Figures 2, 4, and 5, has itsdownwardly inclined part positioned adjacent to the detents 3| thattravel forwardly and rearwardly during the longitudinal reciprocation ofthe carrier plate 28. When the carrier plate is swung downwardly on itspivotal mounting 21 the lower end of the cam plate 39 will engage withthe upper surfaces of the detents 3| which are urged inwardly to normaloperative position by the springs 34. The forward ends of the detents 3|have inclined cam surfaces 4| positioned adjacent to the cam plate 39and cooperating with the latter to urge the detents outwardly on theirpivots 32 away from their normal operative holding positions, as latermore fully described.

For effecting longitudinal reciprocation of the pin carriage manually anoperating rock shaft 42 is mounted in appropriate hearings in thechannel members 23 of the frame 22. This operating shaft is extended atone end through the casing and is provided with an exterior operatinghandle 43. A spiral spring '44 surrounds the operating shaft 42, beinganchored at one end to the frame 22 and its opposite end to the shaft,and being tensioned so as to normally urge the shaft in reversedirection, tending to move the pins 30 into their rearward or initialposition. The connecting crank or plate 45 is firmly attached to theoperating shaft 42 and has spaced connecting arms 46 carrying connectingpins 41 engaging in elongated slots 48 provided in connecting lugs 49that are attached to the forward extremity of the slide plate 26. Itwill thus be seen that rocking movement of the operating shaft 42 willcause, through these operating connections, longitudinal reciprocationof the slide plate 26 and of the pin carrier plate 28. The slide plate26, together with the pin carrier plate 28 pivoted thereto form theprincipal elements of the iongitudinally reciprocating carriage forcarrying the pins forwardly and rearwardly in their strip operatingmovements.

From the foregoing detailed description the operation of the improvedadvancing mechanism will now be clear. It will be noted that the pincarriage and pins 30 will be normally urged into their initial orretracted position, shown in Fig. 2, by means of the spring 44 and theoperating connections of the shaft 42 with the pin carriage. In thisposition the pin carrier plate 28 is swung upwardly on its pivot 21 intoits normal operative position by the spring 36, and the pins 30 will beengaged in the apertures S of the record strips. The cam plate 39 willbe interposed between the detents 3| holding them apart slightly ininoperative positions against the pressure of springs 34.

After the desired inscriptions have been made upon the record strips, itis usually desired to move the inscribed form sheets forwardly from themachine and to sever them along the perforated weakened lines S from thecomplete strip supply. This-can be quickly and easily accomplished asfollows:

Through the operating handle 43 the operating shaft 42 is rockedforwardly in clockwise direction, as viewed in Fig. 2, thus urging thepin carriage including the pin carrier plate 28 forwardly and advancingthe strip so that the forward end portions thereof are projected throughthe exit opening 50 into position so that the projecting ends can beeasily grasped to complete the forward movement of the inscribed formsheets. During the first part of this movement the pins 30 remain instrip engagement, but as advancement proceeds the inclined cam surface39' of the cam plate 39 engages the forward edge of the carrier plate28, thus swinging the carrier plate 28 downwardly on its pivot 21against the resistance of the spring 36 so as to withdraw the pins 30from the strip apertures. Withdrawal of the pins from the apertures doesnot occur until the forward ends of the strips have been projectedthrough the opening 50 into position to be grasped. When the pins havethus been withdrawn, the advancement of the inscribed form sheets can becompleted manually by grasping the forward ends and pulling themforwardly and severing them along one edge of the opening 50 along theseverance lines S When the pins have thus been withdrawn from theapertures, as described, they are prevented from reentering the sameapertures by engagement of the lower end of the lug or cam plate 39 withthe upper surfaces of the detents 3|. In order to accomplish this thedetents 3|, which were previously held apart by interposition of the camplate 39, are swung inwardly by their springs 34 just as soon as thedetents are swung downwardly sufliciently to clear the lower end of thecam plate 39. When the detents are thus moved inwardly the upperadjacent surfaces thereof are engaged by the lower end of the plate 39;both of the adjacent upper marginal parts of the detents are now engagedby the end of plate 39 so as to prevent the carrier plate fromimmediately swinging back again into its normal operative position. Thecarrier plate 28 is thus held in its downward or retracted positionuntil the end of the plate 39 slides off the outer ends of the detents.The carrier plate 28 is then immediately returned by its spring 36 toits normal operative position, the upper ends of the pins 30 thenresting against the lower surfaces of the record strips rearwardly ofthe strip apertures from which they have just been withdrawn, and beingyield-' ingly urged against the lower strip by action of the spring 36.When the pins are in this position the strips are pulled forwardly byhand without hindrance by the pins, as above described, thus bringingthe next successive set of blank forms into writing position. The pinswill thus be urged into engagement with the next succeeding pair ofstrip apertures S as the strip is being pulled out so as to position andalign the strips with the blank forms in the correct writing position.

As the carrier plate 23 retracts to move the pins rearwardly, as abovedescribed, the detents 3| similarly move rearwardly with their upperadjacent surfaces slidably engaging the lower end of the plate 39. Whenthe holding plate 39 reaches the outer ends of the detents it engageswith the inclined cam surfaces I so as to swing the detents outwardlyaway from each other to their inoperative positions, this movement beingeffected automatically when the carrier plate 26 is swung upwardly intoits normal operative position. The detents are held in operativeposition by engagement of the inner edges thereof with the plate 39until the carrier plate 28 is again swung downwardly to withdraw thepins in the next succeeding advancing operation.

From the foregoing description it will be seen that the advancingmechanism is operated very quickly and easily by a single stroke of theoperating handle 43 to advance the forward ends of the strips from theopening 50. The return movement of the advancing mechanism is effectedby means of the spring 44. During the rear- Ill ward movements the pinscannot reengage in the same strip apertures which would interfere withcompletion of the strip withdrawal. But the pins are automaticallyreturned to their operative position after they have been movedrearwardly out of alignment with the forward strip apertures.

Thus the improved mechanism is quick and sim- Having described myinvention, what I claim as new and desire to secure by Letters Patentis:

1. In strip advancing mechanism for machines of the character described,in combination, a

strip advancing pin for engaging in strip apertures, a movable pincarriage mounting said pin for strip advancing movement and for movementto and from aperture engaging position, means for moving said carriageforwardly to advance the strips, automatic means for retracting said pinfrom aperture engagement at the forward part of the forward movementthereof, a pair of detents mounted side by side for swinging movementstoward and away from each other to holding and releasing positions andpositioned for holding said pin in retracted aperture disengagingposition, means for automatically swinging said detents together intopin-holding position upon retraction of the pin from apertureengagement, and means operative during reverse movement of said pincarriage for releasing said detents and retaining them in theirseparated inoperative positions.

2. In strip advancing mechanism for machines of the character described;in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement andfor movement to and from aperture engaging position, means for movingsaid pin carriage forwardly to advance the strips, automatic means forretracting said pin from aperture engagement at the forward part of theforward movement thereof, a detent movably mounted on said carriage formovement therewith, a holding lug slidably engaging said detent duringrearward movement of said carriage for holding said pin retracted inaperture disengaging position, and means for setting said detent inposition for cooperative engagement with said holding lug.

3. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures,a, movable pin carriage mounting said pin for strip advancing movementand for movement to and from aperture engaging position, means formoving said carriage forwardly to advance the strips, automatic meansfor retracting said pin from aperture engagement at the forward part ofthe forward movement thereof, a detent movably mounted on said carriagefor movement therewith, a holding lug slidably engaging said detentduring rearward movement of said carriage for holding said pin retractedin aperture disengaging position, means for setting said detent inposition for cooperative engagement with said holding lug, said detentbeing positioned to slide out of holding engagement with said holdinglug during rearward movement of said carriage, and means for moving saidcarriage to bring said pin again into aperture engaging position.

4. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement andfor movement to and from aperture engaging position, means for movingsaid carriage forwardly to advance the strips, automatic means forretracting said pin from aperture engagement at the forward part of theforward movement thereof, a detent movably mounted on said carriage formovement therewith, a holding lug slidably engaging said detent duringrearward movement of said carriage and pin for holding said pinretracted in aperture disengaging position, means for setting saiddetent in position for cooperative engagement with said holding lug,said detent being positioned to slide out of holding engagement withsaid holding lug during rearward movement of said carriage, means formoving said carriage to bring said pin again into aperture engagingposition, and automatic means for setting said detent in its inoperativeposition upon said last mentioned movement of said carriage.

5. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin upwardly and downwardly to and fromaperture engagement, means for longitudinally reciprocating saidcarriage and carrier element to effect strip advancement during theforward stroke thereof, and a cam member cooperating with said carrierelement to swing it downwardly on said slide near the extremity of itsstrip advancing movement and retracting said pin from apertureengagement.

6. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin upwardly and downwardly to and fromaperture engagement, means for longitudinally reciprocating saidcarriage and carrier element to effect strip advancement during theforward stroke thereof, means for swinging said carrier elementdownwardly near the extremity of its strip advancing movement andretracting said pin from aperture engagement, means for retaining saidcarrier element in its downward position at the return stroke of thecarriage while the pin is carried rearwardly out of aperture alignment,and means for subsequently returning said carrier element and pin tobring said pin again into position for engagement with a succeedingstrip aperture.

7. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin to and from aperture engagement,means for 1on- -gitudinally reciprocating said carriage and carrierelement to effect strip advancement during the forward stroke thereof, acam member cooperating with said carrier element to swing it downwardlyon said slide near the extremity of its strip advancing movement andretracting said pin from aperture engagement, means for retaining saidcarrier element in its downward position at the return stroke thereofwhile the pin is carried rearwardly out of aperture alignment, and meansfor subsequently returning said carrier element and pin to bring saidpin again into position for engagement with a succeeding strip aperture.

8. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin to and from aperture engagement,means for longitudinally reciprocating said carriage and carrier elementto effect strip advancement during the forward stroke thereof, means forswingingsaid carrier element away from the strip near the forwardextremity of its strip advancing movement and retracting said pin fromaperture engagement, a movably mounted detent for holding said pin inretracted aperature disengaging position, and means for automaticallysetting said detent in pin-holding position upon retraction of the pinfrom aperture engagement.

9. In strip advancing mechanism for machines of the character described,in combination, a strip advancing pin for engaging in strip apertures, amovable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin to and from aperture engagement,means for longitudinally reciprocating said carriage and carrier elementto eifect strip advancement during the forward stroke thereof, means forswinging said carrier element away from the strip near the extremity ofits strip advancing movement and retracting said pin from apertureengagement, a movably mounted detent for holding said pin in retractedaperture disengaging position, means for automatically setting saiddetent in pin-holding position upon retraction of the pin from apertureengagement, and means operative during reverse movement of said pin forreleasing said detent and returning it to its inoperative position.

10. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures. a

movable pin carriage mounting said pin for strip advancing movement,said carriage including a slide and a pin carrier element swingablymounted thereon for carrying the pin to and from aperture engagement,means for longitudinally reciprocating said carriage to effect stripadvancement during its forward stroke, means for swinging said carrierelement near the extremity of its strip advancing movement andretracting said pin from aperture engagement, a detent movably mountedon said carriage for movement therewith, a holding lug slidably engagingsaid detent during rearward movement of said carriage for holding saidcarrier element and pin retracted in aperture disengaging position, andmeans for setting said detent in position for cooperative engagementwith said holding lug.

11. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures, a movable pin carriage mounting said pin for strip advancingmovement, said carriage including a slide and a pin carrier elementswingably mounted thereon for carrying the pin to and from apertureengagement, means for longitudinally reciprocating said carriage toeffect strip advancement during its forward stroke, means for swingingsaid carrier element near the forward extremity of its strip advancingmovement and retracting said pin from aperture engagement, a detentmovably mounted on said carriage for movement therewith, a holding lugslidably engaging said detent during rearward movement of said carriagefor holding said carrier element and pin retracted in aperturedisengaging position, means for setting said detent in position forcooperativeengagement with said holding lug, said detent beingpositioned to slide out of holding engagement with said holding lugduring rearward movement of said carriage, and means for moving saidcarrier element to bring said pin again into aperture engaging position.

12. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures, a movable pin carriage mounting said pin for strip advancingmovement, said carriage including a slide and a pin carrier elementswingably mounted thereon for carrying the pin to andfrom apertureengagement, means for longitudinally reciprocating said carriage toeifect strip advancement during its forward stroke, means forswingingsaid carrier element near the forward extremity of its strip advancingmovement and retracting said pin from aperture engagement, a detentmovably mounted on said carriage for movement therewith, a holding lugslidably engaging said detent during rearward movement of said carriagefor holding said carrier element and pin retracted in aperturedisengaging position, means for setting said detent in position for 00-operative engagement with said holding lug, said detent being positionedto slide out of holding engagement with said holding lug during rearwardmovement of said carriage, means for moving said carrier" element tobring said pin again into aperture engaging position, and means forautomatically setting said detent in its inoperative position upon saidlast mentioned movement of said carriage.

13. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures, a movable pin carriage mounting said pin for strip advancingmovement, said carriage including a slide and a pin carrier elementswingably mounted thereon for carrying the pin to and from apertureengagement, means for longitudinally reciprocating said carrierelementto effect strip advancement during its forward stroke, meansnormally urging said carrier element into its normal operative position,a downwardly inclined cam plate cooperating with said carrier element toswing it downwardly near the forward extremity of its strip advancingmovement and to retract said pin from aperture engagement, a pair ofdetents mounted side by side on said carrier element for movement towardand from each other, said cam plate being positioned adjacent to saiddetents and forming a holding lug slidably engaging therewith to holdsaid carrier element and pin retracted in aperture disengaging position,and automatic means for moving said detents together into position forengagement with said lug so as to retain said carrier element in itsretracted position.

14. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures, a movable pin carriage mounting said pin for strip advancingmovement, said carriage including a slide and a pin carrier elementswingably mounted thereon for carrying the pin to and from apertureengagement, means for longitudinally reciprocating said carrier elementto effect strip advancement during its forward stroke, means normally urging said carrier element into its normal operative position, adownwardly inclined cam plate cooperating with said carrier element toswing it downwardly near the forward extremity of its strip advancingmovement and to retract said pin from aperture engagement, a pair ofdetents mounted side by side on said carrier element for movement towardand from each other, said cam plate being positioned adjacent to saiddetents and forming a holding lug slidably engaging therewith to holdsaid carrier element and pin retracted in aperture disengaging position,and automatic means for moving said detents together into position forengagement with said lug so as to retain said carrier element in itsretracted position, said holding lug being positioned to slide alongsaid detents out of engagement therewith during rearward movement withsaid carrier'element and to automatically set said detents ininoperative position.

15. In strip advancing mechanism for machines of the characterdescribed, in combination, a strip advancing pin for engaging in stripapertures, a longitudinally slidable pin carriage mounting said pin forstrip advancingmovement and for movement to and from aperture engagingPosition, means for longitudinally sliding said carriage forwardly toadvance the strips, automatic means for retracting said pins fromaperture engagement at the forward part of the advancing movementthereof, a unitary frame including a horizontally disposed frame platesupporting said pin carriage in operative position, upright flangedsupporting frame members integral with said horizontal frame plate, andattaching devices connecting said 7 frame members to the machine'forremoval or in-

